One of my guy friends came to my place tonight. We were completely sober just chilling watching a movie. Well we were sharing a blanket and my foot rubbed his leg accidentally and I see that he got hard from it. I didn’t think anything of it because he is “100% straight.” Well later we just started talking about our sex lives and jerking off. He said he saw our mutual friend jerk off right by him and saw him nut. While he was talking abt it he got an instant boner. We continue talking about things like that and his hands are under his blanket and i can see him stroking. I don’t mention it because it’s kinda hot, but i do change the topic. He then keeps bringing up these topics and trying to get me to notice his boner. I didn’t want anything happening tonight so i just said i was tired and went to bed. Turns out he jerked off and i found the tissue he wiped it up with i think. I want to explore what’s happening but i don’t want to mess up this relationship. Did I read the scenario correctly? How do I bring it back up? Please help me on what to do!!! Any advice helps